public member function （公共成員函式）
<random>
void discard (unsigned long long z);
Advance internal state （推進內部狀態）
Advances the internal state by z notches, as if operator() was called z times, but without generating any numbers in the process. （將內部狀態推進z個刻度，就像呼叫了operator() z次一樣，但在此過程中不生成任何數字。）
The effects on the state sequence are the same as if the transition algorithm was applied z times on subsequent elements. （對狀態序列的影響與轉移演算法對後續元素應用z次的效果相同。）
引數
- z
- Number of equivalent advances. （等效推進的次數。）
示例
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// independent_bits_engine::discard
#include <iostream>
#include <chrono>
#include <cstdint>
#include <random>
int main ()
{
// obtain a seed from the system clock:
unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();
std::independent_bits_engine<std::mt19937,64,std::uint_fast64_t> generator (seed);
std::cout << "Random value: " << generator() << std::endl;
generator.discard(1); // discard one element
std::cout << "Random value: " << generator() << std::endl;
return 0;
}
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可能的輸出
Random value: 13760645581718272663
Random value: 451864462774584642
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複雜度
Linear in z. （與z呈線性關係。）